The influence of the introduction of a national prenatal screening program on late termination of pregnancy, a retrospective cohort study.

Objective: To assess the influence of a national prenatal screening program on category 1 (lethal anomalies) late terminations of pregnancy (LTOP).

Methods: In this population-based retrospective cohort study, we included all category 1 LTOPs from 2004 to 2015 in the Netherlands. The number of LTOPs before and after the introduction of the program was compared as well as the diagnostic process and factors contributing to LTOP.

Prenatal sonographic features can accurately determine parental origin in triploid pregnancies.

Objective: To describe the prenatal sonographic features and maternal biochemical markers in triploid pregnancies and to assess whether prenatal phenotype can determine genetic origin.

Methods: We performed a retrospective multicenter cohort study that included all triploid pregnancies diagnosed between 2000 and 2018 in two Fetal Medicine Units in Amsterdam. Fetal growth, presence of structural anomalies, extra-fetal anomalies, and maternal biochemical markers were retrieved.